mystery meat

noun phrase

Meat not readily identifiable, esp as served in a student dining hall, fraternity house, etc: Parents must follow the rules: They are forbidden to smoke or leave the building, must show up at homeroom and eat mystery meat at lunch like the rest of their classmates

[1970s+ Students; meat loaf was called mystery loaf by the 1940s]

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.Copyright (C) 2007 by HarperCollins Publishers.Cite This Source